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This is a list of the top-selling singles in New Zealand for 2021 from the Official New Zealand Music Chart's end-of-year chart, compiled by Recorded Music NZ.[1] Recorded Music NZ also published 2021 lists for two sub-charts, the top 20 singles released by New Zealand artists,[2] and the top 20 singles primarily performed in Te Reo Māori.[3]
| Rank | Artist | Song |
|---|---|---|
| 1 | L.A.B. | "Why Oh Why" |
| 2 | L.A.B. | "In the Air" |
| 3 | L.A.B. | "Controller" |
| 4 | Niko Walters featuring Kiana Ledé | "Not My Neighbour" |
| 5 | Six60 | "All She Wrote" |
| 6 | Six60 | "Sundown" |
| 7 | Drax Project featuring Six60 | "Catching Feelings" |
| 8 | Six60 | "Fade Away" |
| 9 | Kings featuring Sons of Zion | "Help Me Out" |
| 10 | Six60 | "Don't Forget Your Roots" |
| 11 | Jawsh 685 x Jason Derulo | "Savage Love (Laxed – Siren Beat)" |
| 12 | Stan Walker | "Bigger" |
| 13 | Six60 | "Long Gone" |
| 14 | Six60 | "The Greatest" |
| 15 | L.A.B. | "Yes I Do" |
| 16 | Drax Project featuring Fetty Wap and AACACIA | "Firefly" |
| 17 | Sons of Zion featuring Jackson Owens | "Love on the Run" |
| 18 | Six60 | "Pepeha" |
| 19 | Benee | "Glitter" |
| 20 | Muroki | "Wavy" |
| Rank | Artist | Song |
|---|---|---|
| 1 | Six60 | "Pepeha" |
| 2 | Ka Hao featuring Rob Ruha | "35" |
| 3 | Stan Walker featuring Ibanez Maeva | "Tua" |
| 4 | Sons of Zion featuring Jackson Owens | "He Aroha Hinemoa (Love on the Run)" |
| 5 | Stan Walker | "Matemateāone" |
| 6 | Muroki | "Rehurehu" |
| 7 | Rob Ruha | "Taera" |
| 8 | Katchafire | "Karawhiua / 100" |
| 9 | Stan Walker and the Levites | "He Kākano Āhau" |
| 10 | Lorde | "Te Ao Mārama (Solar Power)" |
| 11 | Stan Walker | "Tau Te Marire (Take It Easy)" |
| 12 | Dave Dobbyn | "Hine Ruhi (Slice of Heaven)" |
| 13 | Maimoa | "Utua" |
| 14 | Origin Roots Aotearoa (O.R.A.) | "Home / Ūkaipō" |
| 15 | Kings featuring Theia | "Pohewatia" |
| 16 | Hollie Smith featuring Don McGlashan | "Kōrukutia / Bathe in the River" |
| 17 | Drax Project | "Tukituki Te Manawa" |
| 18 | Maisey Rika | "Waitī Waitā" |
| 19 | Troy Kingi and the Nudge | "He Ōrite" |
| 20 | Maisey Rika | "Hiwa-i-te-Rangi" |